Texas Instruments TPS748A/TPS748A-Q1 LDO Linear Regulator

Texas Instruments TPS748A/TPS748A-Q1 Low-Dropout (LDO) Linear Regulator provides an easy-to-use, robust power management solution for various applications. User-programmable soft-start minimizes stress on the input power source by reducing capacitive inrush current on start-up. The soft-start is monotonic and designed for powering many different types of processors and application-specific integrated circuits (ASICs). The enable input and power-good output allow easy sequencing with external regulators. This complete flexibility enables a solution to be configured that meets the sequencing requirements of field-programmable gate arrays (FPGAs), digital signal processors (DSPs), and other applications with special start-up requirements.

A precision reference and error amplifier delivers 0.85% accuracy over load, line, temperature, and process. The device is stable with any capacitor greater than or equal to 10µF. It is also fully specified for TJ = –40°C to +125°C. The Texas Instruments TPS748A/TPS748A-Q1 is offered in a small, 3mm × 3mm VSON-10 package, yielding a highly compact total solution size. The TPS748A-Q1 devices are AEC-Q100 qualified for automotive applications.


  • 0.8V to 3.6V VOUT range
  • 0.8V to 6.0V ultra-low VIN range
  • 2.7V to 6.0V VBIAS range
  • 75mV typical at 1.5A, VBIAS = 5V low dropout
  • Power-Good (PG) output allows supply monitoring or provides a sequencing signal for other supplies
  • 0.85% accuracy over line, load, and temperature
  • Programmable soft-start provides linear voltage start-up
  • VBIAS permits low VIN operation with good transient response
  • Stable with any output capacitor ≥ 10µF
  • Available in small, 3mm × 3mm × 1mm VSON-10 packages


  • Rugged PCs and laptops
  • Land mobile radios
  • Wired communications
  • Power-supply modules

Functional Block Diagram

Block Diagram - Texas Instruments TPS748A/TPS748A-Q1 LDO Linear Regulator
Published: 2023-03-01 | Updated: 2023-06-22